65313511 has 2 divisors, whose sum is σ = 65313512. Its totient is φ = 65313510.

The previous prime is 65313467. The next prime is 65313527. The reversal of 65313511 is 11531356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65313511 - 2²¹ = 63216359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65313551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32656755 + 32656756.

It is an arithmetic number, because the mean of its divisors is an integer number (32656756).

Almost surely, 2^65313511 is an apocalyptic number.

65313511 is a deficient number, since it is larger than the sum of its proper divisors (1).

65313511 is an equidigital number, since it uses as much as digits as its factorization.

65313511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 25.

The square root of 65313511 is about 8081.6774867598. The cubic root of 65313511 is about 402.7179710035.

Adding to 65313511 its reverse (11531356), we get a palindrome (76844867).

The spelling of 65313511 in words is "sixty-five million, three hundred thirteen thousand, five hundred eleven".